Struct RateMeter 

pub struct RateMeter<K> { /* private fields */ }

Turns cumulative CPU times into rates: the fraction of one core used since the previous round (1.0 = one core fully busy).

Each round, call RateMeter::sample for every key still alive, then RateMeter::finish; keys not sampled in a round are forgotten, so a PID reused by a new process (a new key) starts fresh.

Implementations

impl<K: Eq + Hash + Clone> RateMeter<K>

pub fn new() -> Self

pub fn sample(&mut self, key: K, total_ns: u64, now: Instant) -> Option<f64>

Record total_ns for key at now; the rate since the previous round, or None on a key’s first round (or a counter that went backwards).

pub fn finish(&mut self)

End a round.

pub fn len(&self) -> usize

Keys remembered from the last finished round.

pub fn is_empty(&self) -> bool

Trait Implementations

impl<K: Debug> Debug for RateMeter<K>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<K> Default for RateMeter<K>

fn default() -> Self

Returns the “default value” for a type.